12 
18. Lecanium sp. (?)—Several oblong scales on pods of Catalpa, San Luis Potosi, 
October 12. This species was overlooked at the Department in making the determi- 
nations, and is doubtfully referred by me to this genus, The scales occurred singly 
on the pods. 
19. Pulvinaria n. sp.?—Found singly on leaves of ‘‘fitolaca,” at Monterey. With 
Lecanium hesperidum. Specimens were lost in transit to Washington, and were not 
reported on at the Department. 
20. Auiacaspis rose Bouché.—Thickly massed on rose branches. Chihuahua. 
Found elsewhere in the United States, Jamaica, Demerara, Enrope, New Zealand. 
21. Aulacaspis boisduralii Sign.—On Bromelia pinguin, a plant nearly allied to the 
pineapple, growing wild in tropical America and forming impenetrable thickets in 
southern Tamaulipas. Alta Mira, Tamaulipas. Known in Jamaica, Barbados, and 
Trinidad. 
22. Mytilaspis gloveri Pack.—Very bad on leaves and fruit of orange in Tampico, 
associated with Chionaspis citri and Aspidiotus ficus. Also on orange in Matamoras, 
December 9. This species is new to Mexico. It is found elsewhere in Louisiana, 
Florida, and Southern Enrope. 
23. Pseudococcus yuccw Coq.—This species was found by me on the following plants 
in the following localities: 
Tlaltizapan (State of Morelos): Sparingly on a lime tree. Mexico City: On tall 
Yucea (Y. filifera probably) in Plaza Guardiola; very bad, covering all the leaves; on 
-banana (1892). Guadalajara: On orange, yellow-variegated Agave, banana, Yucca, 
Caladium. Aguas Calientes: On common red-flowering Pelargonium, and on Amaryl- 
lis. San Luis Potosi: On orange, lime, cherimoya, a malvaceous white-flowering tree, 
a shrub with red, honeysuckle-lke flowers and rose-like leaves, Lantana sp., pome- 
granate, and Catalpa. Tampico: A few on orange. Las Esteros (Tamaulipas): On 
thorny shrub, October 15. Monterey: Numerous on leaves of fig trees. This species 
was very bad on all the orange trees in Guadalajara, and very numerous on Yucca, 
Agave, and stems and leaves of Caladium. In San Luis Potosi it was very bad on 
green fruit of orange (also on leaves and branches), on lime, and clustered in white 
masses on the fruit of cherimoya, but not on the leaves of latter. It attacks a great 
variety of plants. 
It oceurs elsewhere in California only. Professor Cockerell does not consider it to 
be a true Pseudococeus, but probably a new genus. Individuals with 8-jomted 
antenne were described by Cockerell as Dactylopius mexicanus. 
24. Lriococcus dubius Cll. n. sp.—Valles, October 13. On twigs of unknown shrub. 
25. Conchaspis angrect var. hibisci Ckll. var. nov..—Found on leaf stems and twigs 
of Hibiscus floridanus in plaza in Tampico, October 14. 
C. angreci (typical form) is known only from Jamaica and from hothouses in 
England. 
The following three new species were collected in Ciudad Porfirio 
Diaz (Piedras Negras), Coahuila, in November, while engaged on an 
investigation of the cotton boll weevil, and are included (as are other 
data gained at the:same time) in this report so as to complete the 
account of Mexican seale insects to the present time: 
26. Aspidiotus yucce Ckll. n. sp.—On Yucca australis (or a closely allied species). 
C. P. Diaz, Thickly covering the leaves, especially toward base. 
27. Aspidiotus townsendi Ckll. n. sp.—On leaves of unknown tree. C. P. Diaz. 
28. Dactylopius olivaceus Ckll. n. sp.—In cavities in leavés of Yucea australis. 
C. P. Diaz. 
Negative results.—In the vicinity of Magdalena, Sonora (at Magda- 
lena and San Ignacio), | examined many grapes, apples, plums, pears, 
